Chlorine dioxide gas generating method, liquid composition, gel composition, and chlorine dioxide gas generating kit

Abstract

Chlorine dioxide gas is generated at a stable concentration from a liquid composition. The composition is obtained by mixing an aqueous chlorite solution, an activator that immediately adjusts a pH of the aqueous chlorite solution, thereby causing the aqueous chlorite solution to generate chlorine dioxide gas, and an activation inhibitor that slowly mitigates an action of the activator.

1 . A chlorine dioxide gas generating method for generating chlorine dioxide gas at a stable concentration from a liquid composition, comprising obtaining the composition by mixing an aqueous chlorite solution, an activator that immediately adjusts a pH of the aqueous chlorite solution, thereby causing the aqueous chlorite solution to generate chlorine dioxide gas, and an activation inhibitor that slowly mitigates an action of the activator
 (excluding a case of further mixing 0.5% by weight or more of a catalyst for facilitating generation of chlorine dioxide gas within one minute after mixing the activator, in a case in which the activation inhibitor is sodium silicate pentahydrate and an amount thereof added is 2% by weight or more with respect to an amount of the liquid composition excluding the activator).   
     
     
         2 . A chlorine dioxide gas generating method for generating chlorine dioxide gas at a stable concentration from a gel composition, comprising obtaining the composition by mixing an aqueous chlorite solution, an activator that immediately adjusts a pH of the aqueous chlorite solution, thereby causing the aqueous chlorite solution to generate chlorine dioxide gas, an activation inhibitor that slowly mitigates an action of the activator, and an absorbent resin. 
     
     
         3 . A liquid composition for generating chlorine dioxide gas at a stable concentration, comprising an aqueous chlorite solution, an activator that immediately adjusts a pH of the aqueous chlorite solution, thereby causing the aqueous chlorite solution to generate chlorine dioxide gas, and an activation inhibitor that slowly mitigates an action of the activator
 (excluding those further comprising 0.5% by weight or more of a catalyst for facilitating generation of chlorine dioxide gas within one minute after mixing the activator, in a case in which the activation inhibitor is sodium silicate pentahydrate and an amount thereof contained is 2% by weight or more with respect to an amount of the liquid composition excluding the activator).   
     
     
         4 . A gel composition for generating chlorine dioxide gas at a stable concentration, comprising an aqueous chlorite solution, an activator that immediately adjusts a pH of the aqueous chlorite solution, thereby causing the aqueous chlorite solution to generate chlorine dioxide gas, an activation inhibitor that slowly mitigates an action of the activator, and an absorbent resin. 
     
     
         5 . A chlorine dioxide gas generating kit for generating chlorine dioxide gas at a stable concentration from a liquid composition, comprising:
 a first agent containing an aqueous chlorite solution; and   a second agent containing an activator that immediately adjusts a pH of the aqueous chlorite solution, thereby causing the aqueous chlorite solution to generate chlorine dioxide gas, and an activation inhibitor that slowly mitigates an action of the activator,   wherein the composition is obtained by mixing the first agent and the second agent.   
     
     
         6 . A chlorine dioxide gas generating kit for generating chlorine dioxide gas at a stable concentration from a liquid composition, comprising:
 a first agent containing an aqueous chlorite solution and an activation inhibitor; and   a second agent containing an activator that immediately adjusts a pH of the aqueous chlorite solution, thereby causing the aqueous chlorite solution to generate chlorine dioxide gas,   wherein the activation inhibitor slowly mitigates an action of the activator, and   the composition is obtained by mixing the first agent and the second agent   (excluding those in which at least one of the first agent and the second agent further contains 0.5% by weight or more of a catalyst for facilitating generation of chlorine dioxide gas within one minute after mixing the agents, in a case in which the activation inhibitor is sodium silicate pentahydrate and an amount thereof contained is 2% by weight or more with respect to an amount of the liquid composition excluding the activator).   
     
     
         7 . A chlorine dioxide gas generating kit for generating chlorine dioxide gas at a stable concentration from a gel composition, comprising:
 a first agent containing an aqueous chlorite solution; and   a second agent containing an activator that immediately adjusts a pH of the aqueous chlorite solution, thereby causing the aqueous chlorite solution to generate chlorine dioxide gas, an activation inhibitor that slowly mitigates an action of the activator, and an absorbent resin,   wherein the composition is obtained by mixing the first agent and the second agent.   
     
     
         8 . A chlorine dioxide gas generating kit for generating chlorine dioxide gas at a stable concentration from a gel composition, comprising:
 a first agent containing an aqueous chlorite solution and an activation inhibitor; and   a second agent containing an activator that immediately adjusts a pH of the aqueous chlorite solution, thereby causing the aqueous chlorite solution to generate chlorine dioxide gas, and an absorbent resin,   wherein the activation inhibitor slowly mitigates an action of the activator, and   the composition is obtained by mixing the first agent and the second agent.   
     
     
         9 . The chlorine dioxide gas generating kit according to  claim 5 , wherein the activation inhibitor is an alkali metal silicate or an alkaline-earth metal silicate. 
     
     
         10 . The chlorine dioxide gas generating kit according to  claim 9 , wherein the activation inhibitor is a sodium silicate. 
     
     
         11 . The chlorine dioxide gas generating kit according to  claim 5 , wherein the activator is an inorganic acid or an organic acid, or a salt thereof. 
     
     
         12 . The chlorine dioxide gas generating kit according to  claim 11 , wherein the activator is an inorganic acid whose 1% aqueous solution has a pH of 1.7 or more and 2.4 or less, or a salt thereof. 
     
     
         13 . The chlorine dioxide gas generating kit according to  claim 11 , wherein the activator is sodium metaphosphate. 
     
     
         14 . The chlorine dioxide gas generating kit according to  claim 11 , wherein the activator is an inorganic acid whose 1% aqueous solution has a pH of 3.8 or more and 4.5 or less, or a salt thereof. 
     
     
         15 . The chlorine dioxide gas generating kit according to  claim 11 , wherein the activator is sodium dihydrogen pyrophosphate. 
     
     
         16 . The chlorine dioxide gas generating kit according to  claim 11 , wherein the activator is a mixture of an inorganic acid whose 1% aqueous solution has a pH of 1.7 or more and 2.4 or less, or a salt thereof, and an inorganic acid whose 1% aqueous solution has a pH of 3.8 or more and 4.5 or less, or a salt thereof. 
     
     
         17 . The chlorine dioxide gas generating kit according to  claim 5 , wherein the first agent and the second agent are respectively sealed in sealable containers.